title: In vivo residual activities of the phenylalanine hydroxylating system in phenylketonuria and variants.
mesh_terms: D006801:Humans; D006900:Hydroxylation; D007223:Infant; D008099:Liver / Q000201:enzymology*; D010649:Phenylalanine / Q000097:blood*; D010651:Phenylalanine Hydroxylase / Q000378:metabolism*; D010661:Phenylketonurias / Q000378:metabolism*
chemical_list: D010649:Phenylalanine; D010651:Phenylalanine Hydroxylase